Mobile Image-Based Information Retrieval System

1. A method of recognizing an object in an image, the method comprising: storing objects extracted from images, wherein the objects are associated with a respective time of day at which their corresponding images were created and are stored sorted according to the time of day, receiving an image having a time of day at which the image was created; and recognizing an object in the image by comparing the object to the stored objects in order of the proximity of their times to the time at which the image was created.

2. The method of claim 1 , wherein the object is an advertising billboard, the method further comprising requesting a web page address related to the advertising billboard from a remote server.

3. The method of claim 1 , wherein the object is a car, the method further comprising requesting a car manual related to the car from a remote server.

4. The method of claim 1 , wherein the object is a product, the method further comprising requesting a payment confirmation related to the product from a remote server.

5. The method of claim 1 , wherein the object is a book, the method further comprising requesting an audio stream related to the book from a remote server.

6. The method of claim 1 , wherein the object is a bus stop sign, the method further comprising requesting real-time information on the arrival of a next bus from a remote server.

7. An image-based information retrieval system, comprising: an image database storing objects extracted from images, wherein the objects are associated in the database with a respective time of day at which their corresponding images were created and are stored sorted according to the time of day; and a recognition engine for recognizing an object in an image, the recognition engine performing actions comprising: receiving an image having a time of day at which the image was created; and recognizing an object in the image by comparing the object to the stored objects in order of the proximity of their times to the time at which the image was created.

8. The system of claim 7 , wherein the object is an advertising billboard, the system further comprising an information retrieval module that requests a web page address related to the advertising billboard from a remote server.

9. The system of claim 7 , wherein the object is a car, the system further comprising an information retrieval module that requests a car manual related to the car from a remote server.

10. The system of claim 7 , wherein the object is a product, the system further comprising an information retrieval module that requests a payment confirmation related to the product from a remote server.

11. The system of claim 7 , wherein the object is a book, the system further comprising an information retrieval module that requests an audio stream related to the book from a remote server.

12. The system of claim 7 , wherein the object is a bus stop sign, the system further comprising an information retrieval module that requests requesting real-time information on the arrival of a next bus from a remote server.

13. A computer-readable storage medium having executable computer program instructions embodied therein for recognizing an object in an image, actions of the computer program instructions comprising: storing objects extracted from images, wherein the objects are associated with a respective time of day at which their corresponding images were created and are stored sorted according to the time of day; receiving an image having a time of day at which the image was created; and recognizing an object in the image by comparing the object to the stored objects in order of the proximity of their times to the time at which the image was created.

14. The computer-readable storage medium of claim 13 , wherein the object is an advertising billboard, the method further comprising requesting a web page address related to the advertising billboard from a remote server.

15. The computer-readable storage medium of claim 13 , wherein the object is a car, the method further comprising requesting a car manual related to the car from a remote server.

16. The computer-readable storage medium of claim 13 , wherein the object is a product, the method further comprising requesting a payment confirmation related to the product from a remote server.

17. The computer-readable storage medium of claim 13 , wherein the object is a book, the method further comprising requesting an audio stream related to the book from a remote server.

18. The computer-readable storage medium of claim 13 , wherein the object is a bus stop sign, the method further comprising requesting real-time information on the arrival of a next bus from a remote server.